From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1F9D9C5B57F for ; Sun, 30 Jun 2019 20:36:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EF37B208E3 for ; Sun, 30 Jun 2019 20:36:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="M5YzlCM7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726984AbfF3Ugx (ORCPT ); Sun, 30 Jun 2019 16:36:53 -0400 Received: from mail-qk1-f195.google.com ([209.85.222.195]:33474 "EHLO mail-qk1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726669AbfF3Ugw (ORCPT ); Sun, 30 Jun 2019 16:36:52 -0400 Received: by mail-qk1-f195.google.com with SMTP id r6so9508147qkc.0; Sun, 30 Jun 2019 13:36:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=StYKnXypXDaNaX52nN9jVP9VolfDF5eTNSV4sKsYdNo=; b=M5YzlCM7sZ7t6Ve1AiiXyULjkmLIbFjo9sO9b9FRNY409L/mHrGKx1FzO5c4lhLgBZ TdNvoZ//n6uDY4yHMu8qpw8HEmgJ+k9tvZbCSYcXR1hRvKeWlGjaxxVmmsTaw/Ah5Jta QW7RuKYv53B+pt6XWvAqtVJrjIcgOQIh6D5k0HhSbMJvjHpKnb7XFy0+y5Vn8ORjdKHS l8cIPPGb4xKCVl1XXeGvLjawptesNngCnBK3nD5nZ0xmfNsaW4lNx4KqqOTFS1RF4sno kaal7JJ7sFroRfvY2pny5HmStncnKE7DmZg3WPWQUwoPCGKi3rJWs/LlrcBXFfBQ4d33 57IA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=StYKnXypXDaNaX52nN9jVP9VolfDF5eTNSV4sKsYdNo=; b=e1NC488A3tVtj1P+/JV2DlPCBvLU18EWXuUzO049MDdwqjv6YrIkkHK+ae4ogcJnc+ AZaWeJUGYAr5fO3Ky16n8Z/Xm6OfumiMfn4bzfjASqpOvhgJm0BsQkBKunnuOygA0RFX xgNGMMSuiBgY4JX4F1HEQBmEOH36JWIoezgV1DYBD86/+ZUI6FxFcMbzPfUZSi0TBAqG 2vd5XACT0SdkAdOLJboh59acQ3vF1SOs+5dTJsYPYaHQWK9V9U+ShQzXaJ3oPkvnVtjj LsJTKIxULNolOMgZe69x39SLXcGrfNFYcJ+6oM3yX/p9zX05A8bB5PR3LavefBk/tHw5 rGNg== X-Gm-Message-State: APjAAAV8LPYPpd/HbhfPEiy7pci6ovYgMYtaOCIQXQq4W3mkAXoKD0UE 7W9DHSSRPR+87iiCMSvWEgU= X-Google-Smtp-Source: APXvYqxXYbfD7yFwsEz+jE2N/G7xl1mla7Ol0HLh8IFTwUjqsgfF8qe2/PhUmuHvmACYXofc01f/Cg== X-Received: by 2002:a37:bf07:: with SMTP id p7mr15452759qkf.315.1561927011188; Sun, 30 Jun 2019 13:36:51 -0700 (PDT) Received: from localhost ([2601:184:4780:7861:5010:5849:d76d:b714]) by smtp.gmail.com with ESMTPSA id c192sm4014942qkg.33.2019.06.30.13.36.50 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Sun, 30 Jun 2019 13:36:50 -0700 (PDT) From: Rob Clark To: dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org Cc: freedreno@lists.freedesktop.org, aarch64-laptops@lists.linaro.org, Rob Clark , Ard Biesheuvel , Ingo Molnar , Will Deacon , Leif Lindholm , Alexander Graf , Steve Capper , Lukas Wunner , Julien Thierry , linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/4] efi/libstub: detect panel-id Date: Sun, 30 Jun 2019 13:36:06 -0700 Message-Id: <20190630203614.5290-3-robdclark@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190630203614.5290-1-robdclark@gmail.com> References: <20190630203614.5290-1-robdclark@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: Rob Clark On snapdragon aarch64 laptops, a 'UEFIDisplayInfo' variable is provided to communicate some information about the display. Crutially it has the panel-id, so the appropriate panel driver can be selected. Read this out and stash in /chosen/panel-id so that display driver can use it to pick the appropriate panel. Signed-off-by: Rob Clark --- drivers/firmware/efi/libstub/arm-stub.c | 49 +++++++++++++++++++++++++ drivers/firmware/efi/libstub/efistub.h | 2 + drivers/firmware/efi/libstub/fdt.c | 9 +++++ 3 files changed, 60 insertions(+) diff --git a/drivers/firmware/efi/libstub/arm-stub.c b/drivers/firmware/efi/libstub/arm-stub.c index 04e6ecd72cd9..999813252e0d 100644 --- a/drivers/firmware/efi/libstub/arm-stub.c +++ b/drivers/firmware/efi/libstub/arm-stub.c @@ -69,6 +69,53 @@ static struct screen_info *setup_graphics(efi_system_table_t *sys_table_arg) return si; } +/* + * We (at least currently) don't care about most of the fields, just + * panel_id: + */ +struct mdp_disp_info { + u32 version_info; + u32 pad0[9]; + u32 panel_id; + u32 pad1[17]; +}; + +#define MDP_DISP_INFO_VERSION_MAGIC 0xaa + +static void get_panel_id(efi_system_table_t *sys_table_arg, + unsigned long fdt_addr) +{ + efi_guid_t gop_proto = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID; + efi_status_t status; + struct mdp_disp_info *disp_info; + unsigned long size = 0; + + status = efi_call_runtime(get_variable, L"UEFIDisplayInfo", + &gop_proto, NULL, &size, NULL); + if (status == EFI_NOT_FOUND) + return; + + status = efi_call_early(allocate_pool, EFI_LOADER_DATA, size, + (void **)&disp_info); + if (status != EFI_SUCCESS) + return; + + status = efi_call_runtime(get_variable, L"UEFIDisplayInfo", + &gop_proto, NULL, &size, disp_info); + if (status != EFI_SUCCESS) + goto cleanup; + + if ((disp_info->version_info >> 16) != MDP_DISP_INFO_VERSION_MAGIC) + goto cleanup; + + efi_printk(sys_table_arg, "found a panel-id!\n"); + + set_chosen_panel_id(fdt_addr, disp_info->panel_id); + +cleanup: + efi_call_early(free_pool, disp_info); +} + void install_memreserve_table(efi_system_table_t *sys_table_arg) { struct linux_efi_memreserve *rsv; @@ -229,6 +276,8 @@ unsigned long efi_entry(void *handle, efi_system_table_t *sys_table, if (!fdt_addr) pr_efi(sys_table, "Generating empty DTB\n"); + get_panel_id(sys_table, fdt_addr); + status = handle_cmdline_files(sys_table, image, cmdline_ptr, "initrd=", efi_get_max_initrd_addr(dram_base, *image_addr), diff --git a/drivers/firmware/efi/libstub/efistub.h b/drivers/firmware/efi/libstub/efistub.h index 1b1dfcaa6fb9..8832cb9a7a40 100644 --- a/drivers/firmware/efi/libstub/efistub.h +++ b/drivers/firmware/efi/libstub/efistub.h @@ -39,6 +39,8 @@ void efi_char16_printk(efi_system_table_t *, efi_char16_t *); unsigned long get_dram_base(efi_system_table_t *sys_table_arg); +void set_chosen_panel_id(unsigned long fdt_addr, unsigned panel_id); + efi_status_t allocate_new_fdt_and_exit_boot(efi_system_table_t *sys_table, void *handle, unsigned long *new_fdt_addr, diff --git a/drivers/firmware/efi/libstub/fdt.c b/drivers/firmware/efi/libstub/fdt.c index 5440ba17a1c5..cb6ea160a40a 100644 --- a/drivers/firmware/efi/libstub/fdt.c +++ b/drivers/firmware/efi/libstub/fdt.c @@ -200,6 +200,15 @@ static efi_status_t update_fdt_memmap(void *fdt, struct efi_boot_memmap *map) return EFI_SUCCESS; } +void set_chosen_panel_id(unsigned long fdt_addr, unsigned panel_id) +{ + void *fdt = (void *)fdt_addr; + int node = fdt_subnode_offset(fdt, 0, "chosen"); + u32 fdt_val32 = cpu_to_fdt32(panel_id); + + fdt_setprop_var(fdt, node, "panel-id", fdt_val32); +} + #ifndef EFI_FDT_ALIGN # define EFI_FDT_ALIGN EFI_PAGE_SIZE #endif -- 2.20.1 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Clark Subject: [PATCH 2/4] efi/libstub: detect panel-id Date: Sun, 30 Jun 2019 13:36:06 -0700 Message-ID: <20190630203614.5290-3-robdclark@gmail.com> References: <20190630203614.5290-1-robdclark@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20190630203614.5290-1-robdclark-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: freedreno-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Sender: "Freedreno" To: 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